All categories

3 years ago

Why does the sun seem to change position in the sky?

2 answers:

7 0

The first major contributor to the Sun's apparent motion is the fact that Earth orbits the Sun while tilted on its axis. The Earth's axial tilt of approximately 23.5° ensures that observers at different locations will see the Sun reach higher-or-lower positions above the horizon throughout the year.

hope this helps ^^

Bezzdna [24]3 years ago

6 0

Answer:

Because the earth rotation, when we move around the sun for a whole 365 times then we will have passed 1 year.

You might be interested in

I'll give 40 pts for this one but pls help me....

Ivenika [448]

3 of them left and i just need points lol sorrrry

3 0

3 years ago

Sugar when dissolved into water, propose whether the compound forms atoms, molecules or lattices. Justify you answer

kirza4 [7]

Answer:

atoms

Explanation:

for sugar to dissolve in water hydaration must be equal to or greater than the lattice energy or molecular forces so when the molecular forces breaks new atoms are formed for recombination in new compound

6 0

3 years ago

The rate constant for a certain reaction is k = 5.40×10−3 s−1 . If the initial reactant concentration was 0.100 M, what will the

IceJOKER [234]

Answer : The concentration after 17.0 minutes will be, $4.05\times 10^{-4}M$

Explanation :

The expression for first order reaction is:

$[C_t]=[C_o]e^{-kt}$

where,

$[C_t]$ = concentration at time 't' (final) = ?

$[C_o]$ = concentration at time '0' (initial) = 0.100 M

k = rate constant = $5.40\times 10^{-3}s^{-1}$

t = time = 17.0 min = 1020 s (1 min = 60 s)

Now put all the given values in the above expression, we get:

$[C_t]=(0.100)\times e^{-(5.40\times 10^{-3})\times (1020)}$

$[C_t]=4.05\times 10^{-4}M$

Thus, the concentration after 17.0 minutes will be, $4.05\times 10^{-4}M$

4 0

3 years ago

I need help fast please <br> What is ATP?

Jobisdone [24]

Answer:

Adenosine triphosphate is a complex organic chemical that provides energy to drive many processes in living cells, e.g. muscle contraction, nerve impulse propagation, and chemical synthesis. Found in all forms of life, ATP is often referred to as the "molecular unit of currency" of intracellular energy transfer. Wikipedia

Formula: C10H16N5O13P3

Molar mass: 507.18 g/mol

IUPAC ID: [[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] phosphono hydrogen phosphate

Acidity (pKa): 6.5

Soluble in: Water

UV-vis (λmax): 259 nm

Explanation:

8 0

4 years ago

Read 2 more answers

Why is gas compressible??

tekilochka [14]

Gases are compressible because most of the volume of a gas is composed of the large amounts of empty space between the gas particles. Hope this helped!

7 0

3 years ago

Read 2 more answers